he primary goal of water treatment is to remove contaminants and make water safe for drinking, cooking, and other uses.
Since pure water is rarely found in nature, it often contains impurities. These impurities can be classified into three progressively finer categories: suspended solids, colloidal solids, and dissolved substances. Different methods of treatment or reduction to acceptable limits are needed for each category.
In most cases, more than one treatment process is required to achieve the desired changes in water quality, so treatment plants usually consist of a chain of processes that operate in sequence.
Differ Types Nature Of Impurities In Water
Pure water is very rare, and all water contains some degree of contamination. The impurities in water can be classified as follows: